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近年来,由单个企业信用违约引发的群体违约事件时有发生,随着企业间关联关系复杂化程度加深,不但加剧了信用市场内的风险传染效应,更易引发系统性金融风险。从网络理论视角系统梳理关联企业群间金融信用风险传染的研究文献,并从关联企业网络的内涵与特征、网络结构与信用风险传染的关系、网络理论在风险传染研究中的应用展开论述。研究发现,动态网络结构以及多层关联网络下信用风险传染的研究更能对实际场景中的风险传染机制进行准确刻画。 相似文献
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管理者的非理性行为—"过度自信"不仅影响企业多元化经营战略,且可能加剧企业信用风险。本文从行为科学视角,对管理者过度自信与经营多元化之间的关系及其对信用风险的影响进行了深入分析,并以深沪A股2009-2012年间的上市公司为研究对象进行了实证检验。研究发现管理者过度自信与多元化经营程度显著正相关,与信用风险显著正相关,多元化经营在管理者过度自信与信用风险之间存在显著中介效应。同时,前期多元化经营程度显著正向影响管理者过度自信心理,而前期企业信用风险对管理者过度自信心理影响不显著。本文的研究结果对企业管理者自身行为修正与经营战略制订具有一定的参考价值。 相似文献
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考虑了信用风险迁移对银行贷款的影响,将信用风险迁移应用到贷款收益率的计算中,求解出各类企业各年份的相应贷款收益率期望值,建立基于信用风险迁移的组合收益与组合风险的计量模型。本文的特色一是把企业信用风险迁移的思路引入到贷款收益率的计算中,反映了企业信用等级迁移对企业收益率的影响,更加客观地反映了贷款的真实收益与风险的关系,解决了现有研究仅简单求解各笔贷款的收益率期望值而忽略信用风险迁移的问题。二是通过信用风险迁移原理计算各类贷款的违约风险,在此基础上测算组合违约风险,建立了贷款组合风险的测算模型,解决了现有研究忽略违约风险因素和对组合风险测算的不合理问题。 相似文献
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长期以来,我国医药流通企业供应链管理中存在很多问题,造成药品流通成本高、流通周期长。随着国家医药体制改革,以及应对外资医药流通企业的竞争,我国医药行业供应链管理体制必将发生重大变革。本文旨在通过药品流通模式、信息管理系统和企业管理机制等方面,对未来我国流通企业的供应链管理模式提升进行探索。 相似文献
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通过R-vine Copula模型,对国民经济中九大门类行业信用风险建模,揭示了样本行业间信用风险的非线性相依结构及信用风险传染路径。实证结果显示:各行业信用风险水平不一,但都较好地拟合了实际经济;任意两行业间无条件信用风险大多表现为下尾相关性,但条件信用风险的尾部相关性总体较弱;国民经济行业体系中存在加剧和减缓行业信用风险传染的"风险催化行业"和"条件隔离行业"。最后,提出了有效控制系统性金融风险、防范金融危机的措施建议。 相似文献
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我国企业信用风险评价指标的有效性研究 总被引：9，自引：0，他引：9
本文从分析我国企业现有信用评价指标体系的有效性入手，通过一系列实证研究，挖掘、识别和分辨企业信用从正常-关注-次级-可疑-损失动态变化过程各信用风险评价指标的统计特征值，并将信用风险评价指标导向与负债代理人（企业经营者）的价值取向联系起来，提出改进我国企业信用风险评价指标有效性的可行途径。 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
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Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
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Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献